England and Wales
General Register Office
The National Archives
The British Library
The National Library of Wales
Commonwealth War Graves Commission
College of Arms
Society of Genealogists
Scotland
General Register Office for Scotland
The National Archives of Scotland
National Library of Scotland
Royal Commission on the Ancient and Historical Monuments of Scotland
Statistical Account of Scotland
The Court of the Lord Lyon
Association of Scottish Genealogists and Researchers in Archives
Northern Ireland and the Republic of Ireland
General Register Office Northern Ireland
Public Record Office of Northern Ireland
The Linen Hall Library
The General Register Office (Republic of Ireland)
The National Archives of Ireland
National Library of Ireland
Association of Professional Genealogists in Ireland
